GB1602626A - Hose joint - Google Patents

Hose joint Download PDF

Info

Publication number
GB1602626A
GB1602626A GB20785/78A GB2078578A GB1602626A GB 1602626 A GB1602626 A GB 1602626A GB 20785/78 A GB20785/78 A GB 20785/78A GB 2078578 A GB2078578 A GB 2078578A GB 1602626 A GB1602626 A GB 1602626A
Authority
GB
United Kingdom
Prior art keywords
joint
hose
hoses
mould
joined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20785/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie Pirelli SpA
Pirelli and C SpA
Original Assignee
Industrie Pirelli SpA
Pirelli SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrie Pirelli SpA, Pirelli SpA filed Critical Industrie Pirelli SpA
Publication of GB1602626A publication Critical patent/GB1602626A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/24—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose
    • F16L33/245—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose the inner or outer part being moulded in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular articles
    • B29C45/14614—Joining tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73755—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5223—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/636—Internally supporting the article during joining using a support which remains in the joined object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

(54) IMPROVEMENTS IN AND RELATING TO A HOSE JOINT (71) We, INDUSTRIE PIRELLI SpA, an Italian Company of Centro Pirelli, Piazza Duca d'Aosta No 2, 20100 Milan Italy, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to hose joint and a method for joining hoses, including pipes, formed from elastomers. Hoses and pipes of this kind are commonly used for hydraulic and sanitary installations.
A large number of branch pipes, Yshaped connections, and other types of joints are required in building constructions to interconnect hoses and pipes; it could be said that the problem of joints is the most critical, the most important and even the most expensive to be solved in a hose or pipework system. The usual metal tubes are joined in many different manners. Welding is carried out according to various systems and, as it is known, there is a wide range of fittings and joints.
The jointing systems applicable to metallic pipes or in general rigid tubes are not suitable, as such, for flexible and bendable hoses of the above indicated type i.e. formed of elastomer and in particular cured elastomers. Threaded joints are not appropriate, unless suitable fittings are previously applied, and this involves for instance seaming operations or the use of adhesives.
The joint should last at least as long as the jointed hoses and be vertically indestructible. Moreover, owing to the particular nature of the hoses to be connected, the joint will not always have the feature of being separable as in the case of a threaded male/female type joint, but said feature can be omitted owing to the simple structure of the joint according to the present invention and to its method of construction, as will be described herebelow. Therefore, instead of disassembling parts of a joint when it is required to separate two hoses, it is acceptable to remove the old joint and to insert a new one.
In accordance with the present invention a method for constructing a joint between two hoses, as hereinafter defined, of elastomeric material comprises inserting a tubular joint element into the ends of the two hoses to be joined, positioning said hose ends and joint element in a two-part mould with the facing ends of said hoses in the required relative position in the joint, closing the two parts of the mould, and injecting into the mould a polyolefinic material in hot state to surround said joint element and interconnect the hose ends.
Reference herein to hose includes both flexible and non-flexible pipes whether reinforced or not.
Particularly suitable materials for the hose include cured ethylene propylene monomer and/or ethylene-propylene diene monomer.
A method for constructing a joint between two hoses of elastomeric material comprises the steps of inserting a tubular element, constituting a part of the joint, into the end of each hose to be joined, positioning the ends of the hoses to be joined in a two part mould with the facing ends of said hoses being arranged in the required final facing position, closing the two parts of the mould, and injecting into the mould a polyolefinic material in hot state.
The tubular element inserted into the end of each hose may be made of a rigid material and is represented by a single body for all the hoses to be joined in order to better establish the respective positions of the various parts of the joint.
The details of the method for constructing the joint are now given. The ends of a tubular element are inserted in the ends of the two hoses to be joined, with the facing ends of the hoses in the required final portions. The unit so-obtained is then placed in a mould, constituted by two halfmoulds, and provided with an injection device through which is injected the polyolefinic material to surround the tubular element and interconnect the hose ends.
The rigid tubular piece inserted in the ends of the hoses to be joined has, in its portion directed towards the outside of the hose into which it is inserted, a reduced diameter therefore, a hollow space is created between said rigid element and the surface of the inner walls of the hose so that, during injection, the polyolefinic material fills said hollow space and surrounds at the same time the whole terminal surface of the hose.
Also the mould and the injection device may have a small overall size and a light weight and be therefore portable.
Further, it is preferable that the mould containing the hose ends is provided with a vent in order to assist in ensuring a good penetration of the polyolefinic material.
Examples of the polyolefinic material suitable to form the above described joints include Moplen (Trade Mark of a product sold by Montedison), copolymers formed by polypropylene and other olefines (Moplen EP) and in general all the material which, as mentioned above, are compatible with the elastomeric material forming the flexible and bendable hoses taken into consideration.
WHAT WE CLAIM IS: 1. A method for constructing a joint between two hoses, as hereinbefore defined, of elastomeric material coynprising inserting a tubular joint element into the ends of the two hoses to be joined, positioning said hose ends and joint element in a two-part mould with the facing ends of said hoses in the required final relative position in the joint, closing the two parts of the mould, and injecting into the mould a poly-olefinic material in hot state to surround said joint element and interconnect the hose ends.
2. A method according to claim 1 wherein the tubular joint element has a reduced diameter in a position thereof lying towards a hose end into which it is inserted.
3. A method as in claim 1 or claim 2 wherein the tubular joint element forming a portion of the joint and which is inserted into the end of each hose to be joined is a tubular rigid core.
4. A method according to any one of the preceding claims wherein there is used for the elastomeric material of the hose cured ethylene-propylene monomer.
5. A method according to any one of claims I to 3 wherein there is used for the elastomeric material of the hose cured ethylene propylene diene monomer.
6. A method according to any one of claims 1 to 3 wherein there is used for the elastomeric material of the hose a combination of cured ethylene-propylene and cured ethylene-propylene diene monomer.
7. A method according to any one of the preceding claims wherein use is made of a joint element of polyolefinic material.
8. A method for constructing a joint between a hose of elastomeric material and a joint element of polyolefinic material substantially as hereinbefore described.
9. A joint constructed by a method according to any one of the preceding

Claims (1)

  1. claims.
GB20785/78A 1977-12-15 1978-05-19 Hose joint Expired GB1602626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT30718/77A IT1113830B (en) 1977-12-15 1977-12-15 PERMANENT GUINTO FOR FLEXIBLE AND CURVABLE PIPING SYSTEMS FOR HYDRO-SANITARY INSTALLATIONS IN CIVIL AND INDUSTRIAL BUILDINGS, AND PROCEDURE FOR ITS PREPARATION

Publications (1)

Publication Number Publication Date
GB1602626A true GB1602626A (en) 1981-11-11

Family

ID=11231335

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20785/78A Expired GB1602626A (en) 1977-12-15 1978-05-19 Hose joint

Country Status (4)

Country Link
DE (1) DE2854062A1 (en)
FR (1) FR2411686A1 (en)
GB (1) GB1602626A (en)
IT (1) IT1113830B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES278800Y (en) * 1984-04-13 1985-08-01 Industrias Vulca, S.A. MULTIPLE CONNECTION PIECE OF FLUID CIRCUITS
DE3713064C1 (en) * 1987-04-16 1988-11-17 Metzeler Gmbh Process for the production of molded hose branches made of rubber
DE4402822C2 (en) * 1994-01-31 1996-04-11 Metzeler Automotive Profiles Process for producing butt joints in rubber profiles made of EPDM and having at least one hollow chamber

Also Published As

Publication number Publication date
DE2854062A1 (en) 1979-06-28
IT1113830B (en) 1986-01-27
FR2411686A1 (en) 1979-07-13

Similar Documents

Publication Publication Date Title
US4049480A (en) Method and apparatus for forming a joint in a confined space between two abutting ends of conduit liners
AU701403B2 (en) Interlocked restraint for a plastic pipe joining system
US3873137A (en) Bellows-type joint assembly
CN106639160B (en) Steel bar sleeve
EP0278544B1 (en) Sealing device
EP0075901A1 (en) Process for providing a mantle tube connection across a joint between heat insulated pipes and pipe section for carrying out said process
WO2019231148A1 (en) Pipe including flexible joint part
AU622675B2 (en) Device for the in situ repair of a pipe
GB1602626A (en) Hose joint
US5778935A (en) Flexible replacement section for irrigation and water pipe
KR20180132318A (en) Pipe assembly
US6113156A (en) Pipe connector
DE69422416T2 (en) METHOD FOR RECOATING A BRANCHING LINE
KR20020016340A (en) coupling for pipe joint
EP0030776A2 (en) A method of providing a mantle tube connection across a joint between heat insulated pipes
ES296459U (en) Lateral coupling for hoses.
JP2020034062A (en) Propulsive force transmission device for earthquake-resistant pipe propulsion laying construction method
PL310885A1 (en) Pipeline connection, pipeline joint and hydraulically operated apparatus for making pipeline joints
JPH0913695A (en) Repairing method of reinforced concrete pole member
GB1600401A (en) Lining leaky open drainage channels
JP3457727B2 (en) Buried pipe repair equipment
ES263774U (en) Flexible joint for piping
JP4360505B2 (en) Pipe repair method
EP3537021A1 (en) Device for the water-tight connection of pipes and accessories for said pipes
JPH07292734A (en) Panel penetrating metal fitting for piping and piping construction using the metal fitting

Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed